Carla

“To give preference to the life of a being simply because that being is a member of our species would put us in the same position as racists who give preference to those who are members of their race.”
― Peter Singer, Practical Ethics

“Humans are the only animals that have children on purpose, keep in touch (or don't), care about birthdays, waste and lose time, brush their teeth, feel nostalgia, scrub stains, have religions and political parties and laws, wear keepsakes, apologize years after an offense, whisper, fear themselves, interpret dreams, hide their genitalia, shave, bury time capsules, and can choose not to eat something for reasons of conscience. The justifications for eating animals and for not eating them are often identical: we are not them.”
― Jonathan Safran Foer, Eating Animals

“If possessing a higher degree of intelligence does not entitle one human to use another for his or her own ends, how can it entitle humans to exploit non-humans?”
― Peter Singer, Animal Liberation

“It is in your power to withdraw yourself whenever you desire. Perfect tranquility within consists in the good ordering of the mind, the realm of your own.”
― Marcus Aurelius, Meditations